I own a 2003 Ford Mustang Cobra. My question concerns the blower whine. As I go through the gears, I can hear the blower initially then the whine stops as RPM increase with no drop off of boost.Shifting to the next higher gear, the whine comes back than disappears again as RPM's increase. From the in car videos I have seen in the various Muatang Cobra forums, I notice that the blower whine does not drop off and remains quite audible through all RPM ranges. Is my supercharger not functioning properly?

 

well im not cobra guy, but if your boost is constant then i would think that it is still okay.

 

That's strange, never heard of losing the whine w/o loosing boost. You might have a boost leak somewhere.

Either way, I'd have it checked out before you go rallying it again...

 

I'm thinking it myght be a boost leak also. I tried the boost bypass trick described at the RPM Outlet web site hoping it would make a diference, no such luck. I'm glad I bought the 100,000 mile warranty! Thanks you your guys. Black04cobra.... does your blower whine remain constant under boost donditions?

 

Whine is constant under boost, yes.

 

have you done a pulley change?..maybe your belt is slipping?

 

Thats really strange, mine gets louder as the rpm's climb. I don't really know how a boost leak would cause the blower to stop whining either, i'd lean more towards the fact that your belt is slipping. Check the belt and see if it is really worn out, or if you can see alot of blackish dust around the blower and on the inside of the hood, those are good indicators your belt needs tightend.

 

I always thought that on a stock Terminator, the whine wasn't that noticeable unless you get a smaller pulley or upgrade to a different supercharger.(KB,Vortech,etc.)

 

You thought wrong.

The whine is almost MORE noticable, because you don't have an aftermarket exhaust plugging your ears.

 

I meant stock supercharger